GrimmSpeed Stage 1 Power Package Subaru WRX 2015-2021 CivicSI_2006-2011 The 1-piece driveshaft for the

The 1-piece driveshaft for the Subaru is a complete 6061-T6 3" aluminum shaft that is approximately 1/2 the weight of the factory 2-piece driveshaft

The HKS Sport Exhaust utilizes a specific muffler design and shape along with the appropriate piping diameter to maintain low-end torque while maximizing high-end horsepower

The DW65c is the only aftermarket fuel pump that allows for proper fitment in the BRZ and FR-S

pilot bearing and alignment tool

GrimmSpeed Stage 1 Power Package Subaru WRX 2015-2021 CivicSI_2006-2011 The 1-piece driveshaft for theThe GrimmSpeed Stage 1 Power Package is an excellent place to start when modifying your 2015+ Subaru WRX. The upgraded GrimmSpeed 3 Port Boost Control Solenoid offers more accurate and more responsive boost control and is a must when having your vehicle professionally tuned. The GrimmSpeed Intake adds an additional performance increase by reducing pre turbo restriction, which allows your turbo to build boost more quickly and more efficiently. Part #: